Smoke-preventing and fuel-economizing appliance.



w. J. an G.' sToRBY. SMOKE PREVENTING AND FUEL BGONOMIZING APPLIANGB. APPLICATION PILBB JULY 20, 1908.

`973,991 Patented Oct. 25, 1910.

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W. JA. & G. STOREY. s MoKE PBEVBNTING AND FUEL EcoNoMIzING MPLMNMJ.`

APPLICATION IILED JULY 20, 190B.

vPatented Oct. 25, 1910;

2 SHEETS-SHEET 2.

ffii/2655195 A f@ C@ WILLIAM JOI-IN STOREY AND GILBERT STOREY, OF ALBERT PARK, NEAR MELBOURNE,

VICTORIA, AUSTRALIA.

SMOKE-PREVENTING AND FUEL-ECONOMIZING APPLIANCE.

Specification of Letters Patent.

Patented Oct. 25, 1910.

Application led July 20, 1908. Serial No. 444,526.

To aZZ 'whom it may concern:

Be it known that we, VILLIAM JOHN S'ronnr, engineer, and GILBERT STonnY, boiler-maker, subjects of the King of Great Britain, residing at No. 4 Greig street, Albert- Park, near Melbourne, in the State of Victoria, Comnionwealth of Australia, and No. 102 Merton road, Albert Park, aforesaid, have invented certain new and useful Improvements in Smoke-Preventing and l4`Liel-Econo1nizi1ig Appliances, of which the following is a specification.

The improvements constituting this invention have reference to boiler and furnace adjuncts, and they have been devised primarily with the object of providing improved means for the consumption and utilization of all gases arising from the fuel, and being of a combustible nature, which gases in the types of furnaces at present largely in use are permitted to escape by passing upwardly through the chimney into the atmosphere in the form of smoke. Such gases in combustion in. the form of flame are by means of our improvements collected in their passage from the furnace and conducted by a pipe or pipes aided by air-pressure through or around the boiler and delivered into the ash-pit for heating purposes, thereby effecting a material saving in the-consumption of fuel and minimizing the emission of smoke.

In order that the invention, having in view these and further objects, may be clearly understood lreference is now made to the accompanying explanatory drawings in which Figure l is a front elevation of a multitubular boiler, and a furnace illustrating the application of the improvements thereto. Fig. 2 is a view in side elevation, partly in vertical section, illustrating a slight modiiication. Fig. 3 is a sectional view of one of the injectors, and Fig. i is a similar view of the other injector. y

In these drawings the letter a indicates the boiler, which is of the horizontal multitubular type, but which may be of any other approved design or type. b designates the furnace, and c the ash-pit. The doors cZ and e of the furnace and ash-pit, respectively, are constructed with any suit-able jointing for the purpose of being perfectly air-tight when closed, and also for the better retention of heat within their respective chambers.

lPositioned in the back flue f of the furnace is the open end g1 of a pipe g which is bent at right angles or approximately so to pass horizontally through the boiler above the water-line. This pipe g projects for some distance from the front of the boiler and then extends downwardly to lead into the ash-pit c at a desired position. rlhe said pipe g at a point adjacent to the back of the boiler is furnished with a suitable injector It, which has a nozzle z' and is secured as by screw-threading to the end of an air-supply pipe j.

Air pressure is supplied to the injector 7L by and through the said pipe y' from a fan, blower or air-pump Z2 of any preferred construction. rlhe purpose of this injector Zz. is to direct the air at pressure into the horizontal portion of the pipe g thereby setting up a suction action which draws the combustible gases from the back of the furnace Z; through the inlet end g1 of the pipe g to be then conducted or forced along with the fresh air from the fan to the bottom of the ash-pit c to be consumed and utilized for heating purposes. By this means the fire is relieved of the pressure of accumulating gases, and free combustion of the fuel is insured. The supply of air from the fan or the like 7c can be constant or it may be regulated by the adjustment of a valve (not shown) in the pipe An auxiliary flue je (see Fig. 4:) may be employed to deliver fresh air direct to the fire-box Z) from the fan k. The said flue is provided with an injector ja to increase the supply of air being delivered in the fire-box. A valve j* is preferably provided at a poin't in the length of said ue for the purpose of regulating the passage of air therethrough.

The injector' Zt is furnished with an airinlet valve Z which can be operated for the admission of an extra supply of air into the pipe g whenever required. Furthermore, an additional injector 72,1, to which air-pressure is supplied by a pipe jl connecting with a suitable fan, blower or pump J3, is arranged at the top of the smokebox m. This injector h1 is furnished with an air-inlet valve Z1 similar in construction and operation to the valve Z previously described, and the injector connects with a pipe n for the purpose ot' conducting the smoke, fumes and. combustible gases trom the smoke-box minto the ash-pit c in a similar manner to the pipe g leading' from the back flue f of the furnace. Valves p-see Fig. l-suitablj7 operated are fitted to the top of the said smoke-box fm tor the purpose of allowing' the escape ot gases chiefly ot' a non-combustible nature, which gases it permitted to enter the ash-pit c would have an injurious effect on the lire by causing an accumulation ot gases and consequentlyv undue pressure on the top et and above the fire.. One of the valves p is connected to a pipe o furnished with a valve o1 and an air-inlet nozzle q', which draws in atmospheric pressure to allow combustion to continue and minimize the emission ot' smoke trom the outlet end ot the said pipe o. Portion of this pipe o is constructed in the term ot a coil i' in order that the gasei and smoke in their transitV can be utilized for heating the boiler feed-water contained in a tank or receptaclev s, or for other heating purposes. A re-. liet` valve t when opened allows the escape into the atmosphere of any air or gases in the furnace when the pressure of such air or gases is too excessive, or when the combustible gases are not to be utilized, as when the iturnace is not in action.

lt preterred, or when an :urcumulator is not employed. the gases and smoke majv be withdrawn Jfrom the smoke-box m, b v means ot the tlue u (shown b v broken lines in Figs. l and 2) until the boiler is in full working order. Directly su'tlieient steam has been generated in the boiler, the flue u can be cut oiil b v means of an;T suitable form otl valve placed at anj7 point in its length, and the surplus gases treated as before described.

lVhat we do claim is:-

l. rlhe combination with a steam boiler and a furnace therefor including an ash pit, a lire box, and a back tlue, ot a pipe passing through the boiler and communicating at its rear end with the back tlue and discharging at its front end into the ash pit, an injector communicating with said pipe and with the atmosphere, a pump communieating with the injector to torce the products ot' combustion trom the back tlue to the ash pit through said pipe and to mix air with the products of combustion, a valve mounted in the injector and providingmeans by which comn'mnication between the atmosphere and the .injector .mayv be controlled, another' pipe communicating with the pump and discharging into the tire box, and a valve in said .last named pipe.

The combination with a steam boiler and a turnacc therefor including an ash pit, a .tire box, a back flue, and a smoke box, ot a pipe passing through the boiler and communicating at its rear end with the back tlue and discharging at its front, end .into the ash pit, an injector communicating with said pipe and with the atmosphere, a pump comnnmica'ting with the injector to torce the products ol combustion from the back tlue to the ash pit through said pipe and to mix air with the products oit combustion, a valve mounted in the injector and providing means bv which communication between the atmosphere and the vinjector majv be controlled, a pipe communicating at one end with the smoke box and. discharging at its other end into the tire box, and a pump communicating with said last named pipe 'to torre the products ot combustion trom the smoke box to the tire box through said pipe and to mix air with the products ot' combustion.

In witness whereot we have signed this specitication `in the presence of two witnesses.

YILLIAM JOHN STOREY. GILBERT STOREY. ,Vitnesses A. J. Cxrmixxx, J. OMixnx. 

